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Expired Canadian patentCanada

High-impact polyamide moulding compositions

CA 1237215 A · Owner: Bayer Aktiengesellschaft · Inventors: Haupt, Heinrich; Lindner, Christian; Merten, Josef

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

Hiqh-impact polyamide mouding composition A b s t r a c t, This invention relates to high-impact mixtures of polyamides and polymers based on polyacrylates or polybutadienes having improved processing behaviour and improved technological properties and to the production of these polymers by a multistage process.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Granted May 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 20, 1985
GrantedMay 24, 1988
Term endedMay 24, 2005
Patent numberCA 1237215 A
Classification (IPC)C08L77/00 +2 more

Timeline

Timeline From CIPO dates

1986198819901992199419961998200020022004Application filedSep 20, 1985Patent grantedMay 24, 1988Term endedMay 24, 2005

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.